SDIY-ARCHIVE |
| This page contains downloadable files that I scanned from old articles I collected between 1975 and 1982. These articles are made available for personnal use and the copyrights belong to the journals in which they were published (Elektor, Wireless Word, Electronics, Electronic Design...). I used some of these for designing my own modular system back in 1980 |
| Jump to Papers in french language |
Electronics |
| TOPIC |
OTA VCF (SVF) |
| TITLE
|
Voltage controlled integrator sets filter bandwith |
| AUTHOR |
Henrique Sarmento Malvar |
| JOURNAL
|
Electronics, july 1980 |
| DOWNLOAD |
(PDF 1.0Mb)  |
| COMMENTS
|
Multimode filter (state variable) based on OTAs, Voltage controlled resonance |
| TOPIC |
ADSR envelope generator |
| TITLE
|
Adjustable exponential generator colors synthesizer's sound |
| AUTHOR |
Randall Kirschman |
| JOURNAL
|
Electronics, july1980 |
| DOWNLOAD |
(PDF 416 kb) |
| COMMENTS
|
| TOPIC |
ADSR envelope generator |
| TITLE
|
Two chip generator shapes sound |
| AUTHOR |
Jonathan Jacky |
| JOURNAL
|
Electronics, september 1980 |
| DOWNLOAD |
(PDF 424 kb) |
| COMMENTS
|
This design served as the basis for most of the ADSR modules found on the WEB (EFM kits, René Schmidtz schemo...). |
Electronic Design |
| TOPIC |
diode VCF (Sallen Key) |
| TITLE
|
Voltage tunable active filter features low, high and bandpass mode |
| AUTHOR |
Nyle Steiner |
| JOURNAL
|
Electronic Design, december 1974 |
| DOWNLOAD |
(PDF 723 kb) |
| COMMENTS
|
A really great design with very few components. I built three of this type in 1979 and they still sound really great. Ken Stone proposes a nice PCB for it. Have a look at www.cgs.synth.net. Another interesting site for DIYing this filter is proposed by Motohiko Takeda. |
| TOPIC |
linear VCO |
| TITLE
|
Inexpensive voltage-controlled oscillator is rich in harmonics over entire audio range |
| AUTHOR |
Henrique Sarmento Malvar |
| JOURNAL
|
Electronic Design, April 1980 |
| DOWNLOAD |
(PDF 799kb)  |
| COMMENTS
|
WARNING : there is a typo in this schematic. Pins 1 and 5 are exchanged on the 555 timer in the schematic. The circuit will not work as shown (no -7.5v to 555) |
| TOPIC |
OTA VCF |
| TITLE
|
Use
transconductance amplifier to make programmable active filters The OTA offers a ten octave tuning range by using predictable Vbe-versus-Ic relashionships |
| AUTHOR |
Sergio Franco |
| JOURNAL
|
Electronic Design, september 1976 |
| DOWNLOAD |
(PDF 1.9Mb) |
| COMMENTS
|
This is a great paper ! No
CA3080,CA3082,LM13600 or LM13700. The OTA
are made with LM3096/CA3096 !
I want to try this one using
Intersil HFA3096 which is an improved
version (good PNP pair) of the LM3096 (poor PNP pair). Anyway I have
something
like 20 CA3096 in my drawer and it worth the try...
|
| TOPIC |
ADSR envelope generator |
| TITLE
|
Get an ADSR waveform for a few components |
| AUTHOR |
Orley Gabor |
| JOURNAL
|
Electronic Design,august 1980 |
| DOWNLOAD | (PDF 256 kb) |
| COMMENTS
|
Wireless Word |
| TOPIC |
Sallen & Key OTA VCF |
| TITLE
|
Voltage/current controlled filter |
| AUTHOR |
Tim Orr |
| JOURNAL
|
Wireless Word november1976 |
| DOWNLOAD |
(PDF 466kb) |
| COMMENTS
|
A
now very classical design. Sallen key structure, two CA3080
OTA and a CA3096 expo converter. It shows some similarities with the
younger MS20 lowpass filter. |
| TOPIC |
Voice formant synthesizer |
| TITLE
|
The Chatterbox : A simple speech synthesizer for demonstration and amusement |
| AUTHOR |
Ian Witten and Peter Madam |
| JOURNAL
|
Wireless Word december 1978 |
| DOWNLOAD |
(PDF 1.2Mb) |
| COMMENTS
|
| TOPIC |
Fine tuning system |
| TITLE
|
Beat frequency indicator |
| AUTHOR |
Craig Clapp |
| JOURNAL
|
Wireless Word november 1976 |
| DOWNLOAD |
(PDF 19kb) |
| COMMENTS
|
This is not the original document, I redrew it and changed the ICs form old TTL to CMOS |
| SUBJECT | Digital infinite sample and world |
| TITLE | Digital
sample and Hold (idea for design) |
| AUTHOR | N. MacDonald |
| JOURNAL
|
Wireless Word may 1976 |
| DOWNLOAD | (PDF 528kb) |
| COMMENTS | Based
on few TTL logic ICs it can be easily converted to a CMOS version. A
good starting point for designing a low cost quantizer ! |
Elektor french edition |
| TOPIC |
Vocoder |
| TITLE
|
Elektor Vocoder |
| AUTHOR |
|
| JOURNAL
|
Elektor 1980 |
| DOWNLOAD |
(PDF 7.2Mb!) 
French version only! for an english version go to Ander
Sponton's page |
| COMMENTS
|
| TOPIC |
Digital keyboard scanner for analogue synths |
| TITLE
|
64 keys digital keyboard |
| AUTHOR |
C. Voss |
| JOURNAL
|
Elektor july/august 1981 |
| DOWNLOAD |
(PDF 2.7Mb)
French version only! |
| COMMENTS
|
This a quite simple TTL based keyboard scanner for a 64 notes keyboard. |
| TOPIC |
Digital keyboard scanner for analogue synths |
| TITLE
|
6 bit encoder for keyboard |
| AUTHOR |
L. Witkam |
| JOURNAL
|
Elektor july/august 1981 |
| DOWNLOAD |
(PDF 780kb)
French version only! |
| COMMENTS
|
This a quite simple CMOS based keyboard scanner for a 64 notes keyboard. |
| TOPIC |
Frequency shifter |
| TITLE
|
Elektor frequency doubler |
| AUTHOR |
|
| JOURNAL
|
Elektor february 1981 |
| DOWNLOAD |
(PDF 912kb)
French version only! |
| COMMENTS
|
This is a simplified implementation of the Bode frequency shifter. Only frequency doubling is achieved. This circuit uses a rather cheap SA602 frequency mixer. |
| TOPIC |
Voice modifier |
| TITLE
|
Elektor voice scrambler |
| AUTHOR |
|
| JOURNAL
|
Elektor november 1981 |
| DOWNLOAD |
(PDF 1.9Mb)
French version only! |
| COMMENTS
|
| TOPIC |
Voice modifier |
| TITLE
|
Elektor robotic voice |
| AUTHOR |
|
| JOURNAL
|
Elektor april 1980 |
| DOWNLOAD |
(PDF 1.1Mb)
French version only! |
| COMMENTS
|
| TOPIC |
Balanced modulator |
| TITLE
|
Ring modulator and envelope follower |
| AUTHOR |
|
| JOURNAL
|
Elektor october 1979 |
| DOWNLOAD |
(PDF 2.1Mb)
French version only! |
| COMMENTS
|
A classic and efficient circuit based on the MC1496. |
| TOPIC | Waveshapers |
| TITLE | Générateur
d'effets sonores Générateur
d'harmoniques commandé en tension |
| AUTHOR | anonymous , Bertuch |
| JOURNAL
|
Elektor july-august 1980 |
| DOWNLOAD | (PDF 904kb)
French version only! |
| COMMENTS | Simple but
efficient waveshapers |
| TOPIC | Make your single VCO sound like 6 ! |
| TITLE | Dent de scie déphasée |
| AUTHOR | Directly inspired from a paper by Bernie Hutchins (JAES
1981) |
| JOURNAL
|
Elektor november 1982 |
| DOWNLOAD | (PDF 860kb)
French version only! |
| COMMENTS | A
classical design found in the DigiSound 80 modular |
| TOPIC | A sample & hold for the FORMANT |
| TITLE | Echantillonneur
bloqueur pour synthétiseur |
| AUTHOR | J. Binder |
| JOURNAL
|
Elektor july-august 1980 |
| DOWNLOAD | (PDF 412kb)
French version only! |
| COMMENTS | A very
classical design |
| TOPIC | Percussion electronique |
| TITLE | Percutron |
| AUTHOR | anonymous |
| JOURNAL
|
Elektor november 1982 |
| DOWNLOAD | (PDF 720kb)
French version only! |
| COMMENTS | |
| TOPIC | DISCO percussion |
| TITLE | Percussion
DISCO |
| AUTHOR | anonymous |
| JOURNAL
|
Elektor june 1984 |
| DOWNLOAD | (PDF 400kb)
French version only! |
| COMMENTS | Piooouuuu
pioooouuu...... |
| TOPIC | FORMANT le synthétiseur modulaire |
| TITLE | Formant
synthétiseur (livre 1), Formant : les extensions (livre 2) |
| AUTHOR | C. Chapman
(book 1), J.P. Aigner (book 2) |
| EDITOR
|
Elektor
1979, 1980 |
| DOWNLOAD | Le Formant, livres 1 & 2 French version only! |
| COMMENTS | Un
ouvrage très complet qui mériterait une
réédition ! A lire absolument ! |
| TOPIC | a small synthesizers : Le Chorosynth |
| TITLE | Le chorosynth |
| AUTHOR | J. D. Mitchell |
| EDITOR
|
Elektor
avril 1980 |
| DOWNLOAD | PDF
French version only! |
| COMMENTS | An
interesting and inspiring project! |
| TOPIC | Alimentation pour synthétiseur |
| TITLE | |
| AUTHOR | |
| EDITOR
|
Elektor
1983 |
| DOWNLOAD |
French version only! |
| COMMENTS | Un
ouvrage très complet qui mériterait une
réédition ! A lire absolument ! |
Radio Plans |
| TOPIC |
Introductory paper on electronic music synthesizers based on Moog's schematics |
| TITLE
|
Electronic Music: synthesizers for composers |
| AUTHOR |
F. Juster |
| JOURNAL
|
Radio Plans 1973 |
| DOWNLOAD |
(PDF 1.7Mb)
French version only! |
| COMMENTS
|
A big thank to Cyril Hoffmeyer for providing me with the scans of this paper |
Others... |
| TOPIC |
Student project supervised by T. Rochebois : building a small
analogue synth |
| TITLE
|
Synthesizer
schematics |
| AUTHOR |
Thierry Rochebois |
| JOURNAL
|
|
| DOWNLOAD |
(PDF 184kb)
French version only! |
| COMMENTS
|
This
is a PDF file containing the schemos of : thermo-controlled (oven) VCO,
VCA, ADSR and keyboard controller. This is a salvage of the
schemos that used to be available years ago at Thierry
Rochebois' homepage. This ressource has disappeared for
long now, therefore I thought it was a good idea to make this available
again to SDIYers. Thierry kindly agreed on that. |